Abdominal Hernia Omar alnoubani MD,MRCS

Size: px

Start display at page:

Download "Abdominal Hernia Omar alnoubani MD,MRCS"

Kristian Spencer
5 years ago
Views:

1 Abdominal Hernia Omar alnoubani MD,MRCS

2 Definition of hernia Anatomical landmarks Overview of types of hernia Presentation and Management of common types of hernia

3 What is the definition of a hernia? An abnormal protrusion of a viscus or part of it from the body cavity through a weakness in the wall of the cavity taking with it all lining of the cavity

4 Where can hernias occur? Via natural orifices Via natural weaknesses Via iatrogenic orifices Via iatrogenic weaknesses

5 Etiology A) Congenita or B) Acquired A) Congenital Hernia: Congenital hernia consists most of the cases of pediatric hernias In the descent of the testes from the abdomen to the scrotum in the third trimester, a part of the peritoneum descends with it which is called the process vaginalis. In the weeks of gestation this process vaginalis closes. Lack of closure of process vaginalis results in a patent process vaginalis which is a reason for the high prevalence of inguinal hernia in the preterm neonates. A lot of the process vaginalises close in a few months after birth and its patency does not necessarily mean that a hernia will be formed.

6 B) Acquired Hernia: Patient factors: Increased Intraabdominal pressure

7 repeated INCREASE in abdominal pressure is usually due to Chronic cough Straining Bladder neck or urethral obstruction Pregnancy Vomiting Sever muscular effort Ascetic fluid

8 Types of Abdominal Hernia Inguinal Femoral Umbilical/Paraumbilical Epigastric Incisional Parastomal Perineal Spigelian Lumbar Obturator Internal Hiatus

9 What can hernias do? Nothing Lump Pain Incarcerate; Something gets stuck Obstruct; Something gets stuck and blocks off Strangulate; Something gets stuck and loses its blood supply

10 Inguinal Hernia About 75% of all hernias happen in the inguinal region. 90% of them are in men and 10% in women. 70% of femoral hernia repairs occur in women (although the prevalence of inguinal hernia in women is 5 times that of femoral hernia. The most common inguinal hernia in women and in men is the indirect inguinal hernia.

11 About 1/3 of the patients who present with hernia, also develop a contralateral hernia. Hernia in the right side is more common. The prevalence of hernia in men has two peak ages:under one and above 40. The prevalence of inguinal hernia increases with age (especially in men).

12 Congenital : 15% bilateral, 80-90% in boys Undescended and ectopic testes : 90% associated with Inguinal Hernia

13 Anatomy The inguinal canal :- The inguinal canal is approximately 4 cm long and is directed obliquely inferomedially through the inferior part of the anterolateral abdominal wall. The canal lies parallel and 2-4 cm superior to the medial half of the inguinal ligament.

14 Inguinal canal Lateral Medial Superficial inguinal ring Here are the anterior wall (which has the SUPERFICIAL inguinal ring situated medially), and the roof. Dr C Slater, Department of Human Biology, University of Cape Town Floor 14

16 Superficial Inguinal Ring Triangular defect in the aponeurosis of the external oblique Immediately above and medial to the pubic tubercle Margins give origin to the external spermatic fascia

17 Deep Inguinal Ring ½ inch above the ligament Midway between Anterior superior iliac spine and the Symphysis Lateral to the inferior epigastric vessels Margins of ring gives origin to the internal spermatic fascia

18 Inguinal Triangle (of Hesselbach) Boundaries Inferiorly = Inguinal ligament (Poupart's ligament) Medially = Lateral border of rectus abdominis Superiorly and Laterally = Inferior epigastric artery

19 Anterior wall - Aponeurosis of External oblique Reinforced in its lateral third by origin of the Internal oblique strongest where it lies opposite the weakest part of the posterior wall (deep ring)

20 Posterior wall - Fascia transversalis Reinforced in its medial third by the conjoint tendon Strongest where it lies opposite the weakest part of the anterior wall (superficial ring)

21 Inferior (floor) - Rolled-under inferior edge of aponeurosis of the External oblique (the inguinal ligament)

22 Superior (roof) - Arching lowest fibers of the Int. oblique and transversus abdominis muscles

23 Content :- 1. Spermatic cord ( round ligament of the uterus in female ): Hernial sac is anteromedial to spermatic cord. The Cord Itself. The contents of the spermatic cord are (a) the ductus (vas) deferens and its artery. (b) the testicular artery and venous (pampiniform) plexus. (c) the genital branch of the genitofemoral nerve. (d) lymphatic vessels and sympathetic nerve fibers. (e) fat and connective tissue surrounding the cord and its coverings in various amounts 2. Ilioinguinal nerve. 3. Ilioinguinal lymph node.

26 Indirect Versus Direct inguinal hernias Indirect Inguinal Hernia Pass through inguinal canal. Can descend into the scrotum. Lateral to inferior epigastric vessels. Reduced: upward, then laterally and backward. Controlled: after reduction by pressure over the internal (deep) inguinal ring. The defect is not palpable (it is behind the fibers of the external oblique muscle). After reduction: the bulge appears in the middle of inguinal region and then flows medially before turning down to the scrotum. Common in children and young adults. Direct Inguinal Hernia Bulge from the posterior wall of the inguinal canal Cannot descent into the scrotum. Medial to inferior epigastric vessels. Reduced: upward, then straight backward. Not controlled: after reduction by pressure over the internal (deep) inguinal ring. The defect may be felt in the abdominal wall above the pubic tubercle. After reduction: the bulge reappears exactly where it was before. Common in old age.

28 Femoral Canal The major feature of the femoral canal is the femoral sheath. This sheath is a condensation of the deep fascia (fascia lata) of the thigh and contains, from lateral to medial, the femoral artery, femoral vein, and femoral canal. The femoral canal is a space medial to the vein that allows for venous expansion and contains a lymph node (node of Cloquet). Other features of the femoral triangle include the femoral nerve, which lies lateral to the sheath, Wall of The Femoral canal anterior is the inguinal ligament posterior is the iliopsoas, pectineal, and long adductor muscles (floor). Medial is lacunar ligament Lateral is femoral vessle

31 Femoral hernia History Age ; uncommon in children, most common in old age female. Sex; women > men (but still commonest hernia in women the inguinal hernia ) The patient came with local symptoms 1- discomfort and pain 2- swelling in the groin General ; femoral hernia is more likely to be strangulated than the inguinal hernia, 40% risk

32 Femoral hernia versus inguinal hernia Inguinal hernia 1- more common in male 2- pass through the inguinal canal 3- neck of the sac is above and medial the pubic tubercle 4- less common to be strangulated 5- can be treated without surgery 6- the two diagnostic signs of hernia + 7- the sac mainly contain ; bowel Femoral hernia 1- more common in females 2- pass through the femoral canal 3- neck of the sac is below and lateral the pubic tubercle 4- more common to be strangulated 5- must be treated surgically 6- the two diagnostic signs of hernia - 7- the sac mainly contains ; omentum

33 variants Sliding Hernia: retroperitoneal structure slides down and herniate into inguinal canal draging overlaying peritoneum with it. Littre s Hernia: Meckels Maydl s: (W) Amyand s: Appendix Richter: Part of the circumference

34 Management and repair

35 Inguinal Hernia Repair Pre op Evaluation & preparation Reduction Surgical TTT Surgical TTT Choice of Anesthetic TTT of hernial sac Inguinal floor reconstruction

36 Pre op evaluation &preparation Watchful Waiting Surgical TTT May be appropriate for pt with asymptomatic hernia or elderly pt with minimal symptoms or easily reduced inguinal hernia. Routine F/U with health care professional A Randomized trial concluded that this is an acceptable option for men with minimally symptomatic inguinal hernia and that delaying repair until symptoms increase is safe due to low rate of incarceration. 23% of pt initially treated with watchful waiting crossed over to surgical ttt due to increase in symptoms (most often hernia-related pain), only 1 pt (0.3%) experienced acute hernia incarceration without strangulation within 2years, a second had acute incarceration with Bowel obstruction at 4 years, corresponding to frequency of acute intervention of 1.8/1000 pt-years (JAMA 2006,295:285)

37 Pre op preparation Most pt are treated surgically Increase IAP abnormalities (Chronic cough, Constipation, Bladder outlet obstruction) should be evaluated and remedied to extent possible before elective herniorrhaphy. In case of intestinal obstruction and possible strangulation, Broad spectrum AB,NG suction may be indicated, correction of volume status& elctroyles.

38 Reduction Uncomplicated: Manual Gentle pressure over hernia Gentle traction over the mass sedation and trendelenburg position. Complicated (strangulated): no attempt should be made to reduce the hernia because of potential reduction of gangrenous segment of bowel with the hernial sac.

39 Surgerical TTT Herniotomy till age of 10 Herniorraphy in adult Open vs Lap. Mesh: synthetic vs biological Ideal: Non allogenic, non carcinogenic, easy to incorporate, give strength and degree of flexibility

40 2.TTT OF HERNIAL SAC INDIRECT: sac is dissected free from the cord structures and creamsteric fibers. Sac should be open away from any herniated contents. Contents are then reduced, and the sac is ligated deep to inguinal ring with an absorbable suture DIRECT: Too broadly based for ligation and should not be opened, simple freed from transversalis fibers and inverted.

41 Femoral hernia repair Femoral hernias should be repaired very soon after the diagnosis has been made because of the high risk of strangulation. There is no place for a truss for a femoral hernia. Different approaches : Open VS Laparoscopic

42 Open surgery Three approaches have been described for open surgery : 1. Infra-inguinal approach (Lookwood) 2. Supra-inguinal approach ( McEvedy) 3. Trans-inguinal approach ( Lotheissen)

43 Umbilical Hernia Common in infant when umbilical vessels fail to fuse with urachal remnant and umbilical ring F>M Majority close spontaneously by age of 4

44 Periumbilical Hernia Defect through midline just above the Umbilicus F>M, More in obese High incidence of strangulation but usually omentum Repair: Mayo vs Mesh

45 Epigastric Midline between xiphisternum and umbilicus 30% Multiple Painful due to herniation of periperitonel fat through a small defect

46 M=F Incisional

47 Spigelian Hernia Rare

Femoral Triangle and Adductor Canal. Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology

Femoral Triangle and Adductor Canal Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology Femoral Triangle and Adductor Canal Femoral triangle Is a triangular depressed area located in the upper